﻿220 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  Mackey's 
  Corners 
  are 
  reddish 
  sandstones 
  which 
  are 
  two 
  and 
  four 
  

   tenths 
  miles 
  northeast 
  of 
  the 
  Mackey 
  farm 
  and 
  some 
  70 
  feet 
  higher 
  

   than 
  the 
  fossiliferous 
  zone 
  of 
  X 
  2 
  . 
  Along 
  the 
  highway 
  near 
  the 
  

   head 
  of 
  the 
  Plattenkill, 
  east 
  of 
  Mackey's 
  Corners 
  and 
  the 
  school- 
  

   house 
  of 
  district 
  no. 
  18, 
  are 
  bright 
  red 
  shales 
  and 
  sandstones. 
  This 
  

   locality* 
  is 
  one 
  and 
  two 
  teuths 
  miles 
  northeast 
  of 
  the 
  one 
  just 
  de- 
  

   scribed 
  and 
  approximately 
  190 
  feet 
  above 
  the 
  fossiliferous 
  zone 
  

   of 
  X 
  2 
  . 
  

  

  LXXVN. 
  On 
  the 
  high 
  plateau 
  some 
  two 
  miles 
  southeast 
  of 
  

   North 
  Blenheim 
  on 
  the 
  road 
  turning 
  south 
  toward 
  the 
  Plattenl^ll 
  

   from 
  the 
  old 
  "state 
  road" 
  are 
  conspicuous 
  exposures 
  of 
  red 
  shales 
  

   (N 
  1 
  ) 
  which 
  are 
  approximately 
  1160 
  feet 
  higher 
  than 
  the 
  Schoharie 
  

   river 
  at 
  North 
  Blenheim. 
  About 
  one 
  half 
  mile 
  farther 
  south 
  by 
  

   the 
  side 
  of 
  this 
  highway 
  are 
  loose, 
  bluish 
  sandstones 
  (N 
  2 
  ) 
  which 
  

   weather 
  to 
  a 
  slightly 
  olive 
  tint 
  and 
  judging 
  from 
  their 
  angular 
  

   form 
  evidently 
  came 
  from 
  that 
  immediate 
  vicinity. 
  These 
  sand- 
  

   stones 
  are 
  115 
  feet 
  above 
  the 
  red 
  shales 
  of 
  N 
  1 
  or 
  approximately 
  

   1275 
  feet 
  higher 
  than 
  the 
  Schoharie 
  river 
  at 
  North 
  Blenheim 
  and 
  

   about 
  three 
  miles 
  north 
  of 
  the 
  fossiliferous 
  shales 
  O 
  2 
  at 
  the 
  south- 
  

   ern 
  end 
  of 
  this 
  hill. 
  Fossils 
  are 
  quite 
  common 
  in 
  them, 
  specially 
  

   Spirifer 
  mesastriaUs 
  Hall 
  and 
  Actinopteria 
  boydi 
  (Con.) 
  Hall. 
  The 
  

   complete 
  list 
  of 
  species 
  is 
  as 
  follows: 
  

  

  1 
  Spirifer 
  mesastriaUs 
  Hall 
  (a) 
  

  

  2 
  Tropidoleptus 
  carinMus 
  (Con.) 
  Hall 
  (r) 
  

  

  3 
  Camarotoechia 
  eximia 
  Hall 
  (c) 
  

  

  4 
  G. 
  stewnsi 
  Hall 
  (?) 
  (r) 
  

  

  Possibly 
  C. 
  eximia 
  for 
  these 
  two 
  species 
  are 
  very 
  closely 
  

   related. 
  

  

  5 
  Goniophora 
  hamiltonensis 
  (Hall) 
  Miller 
  (c) 
  

  

  6 
  Actinopteria 
  boydi 
  (Con.) 
  Hall 
  (c) 
  

  

  7 
  Grammysia 
  obsoleta 
  Hall 
  (?) 
  (rr) 
  

  

  8 
  G. 
  bisnlcata 
  (Con.) 
  Hall 
  (rr) 
  

  

  9 
  Sphenotus 
  solenoides 
  Hall 
  (?) 
  (rr) 
  

  

  There 
  are 
  none 
  of 
  the 
  vascular 
  markings 
  on 
  the 
  posterior 
  

   part 
  of 
  the 
  shell 
  said 
  to 
  be 
  characteristic 
  of 
  this 
  species; 
  

   but 
  in 
  other 
  respects 
  it 
  agrees 
  with 
  it. 
  

  

  